CN102764532B - Cleaning head - Google Patents
Cleaning head Download PDFInfo
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- CN102764532B CN102764532B CN201210105319.1A CN201210105319A CN102764532B CN 102764532 B CN102764532 B CN 102764532B CN 201210105319 A CN201210105319 A CN 201210105319A CN 102764532 B CN102764532 B CN 102764532B
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- cleaning head
- spring
- blade
- disk
- substrate
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- 238000004140 cleaning Methods 0.000 title claims abstract description 157
- 230000000712 assembly Effects 0.000 claims description 47
- 238000000429 assembly Methods 0.000 claims description 47
- 239000000758 substrate Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 239000000706 filtrate Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920004943 Delrin® Polymers 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
- B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/301—Details of removable closures, lids, caps, filter heads
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
- Cleaning In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
The invention relates to a cleaning head. A filter assembly for removing filtrate from industrial process streams includes a housing in which a filter element is disposed. The filter element has a surface against which the filtrate is trapped. A cleaning head to which cleaning blades are attached is disposed in the housing and removes the trapped filtrate. An actuator tube extends through the housing. Internal to the actuator tube is a first magnet. Pressurized gas is selectively applied to the ends of the actuator tube to move the first magnet in the tube. A second magnet is attached to the cleaning head. The second magnet is magnetically coupled to the first magnet so the second magnet moves with the first magnet. Thus, the movement of the first magnet is transferred by the second magnet to the clean head so the cleaning blades move against the filter element.
Description
The name that the application is application number is 200480032705.6, international filing date is on September 1st, 2004 is called the divisional application of the application for a patent for invention of " filter assemblies of the Packed magnetically coupled cleaning head actuator of tool ".
Technical field
The present invention relates generally to a kind of filter assemblies flowing to row relax for liquid towards industrial technology, and more specifically relates to a kind of filter assemblies with cleaning head, and described cleaning head has and sealed and the actuator be magnetically coupled on cleaning head.
Background technology
Filter assemblies is used in industrial plants optionally to remove the material in process flow.Filter assemblies is in order to remove not wishing pollutant and the filtrate of hope is extracted process flow in process flow.The U.S. Patent No. 5 being entitled as the filter with reciprocating cleaning unit of authorizing on March 30th, 1993 of the assignee of applicant, 198,111 and the U.S. Patent No. 5 being entitled as the filter with axially movable wiper of authorizing on June 18th, 1996,527, disclose two this filter assemblies in 462, two patents are cited in this as reference.
Usually, each above-cited filter assemblies comprises elongated cylindrical housings.Enclosure interior is oversleeve shape filter cell.Process stream to be filtered is introduced in filter cell intracardiac usually through case top.Process flow is subject to filtration treatment when the interior of filter member flows.The process flow of filtering leaves filter assemblies by the opening in housing.
When process flow is by filter assemblies, the filtrate of removal accumulates on the inwall of filter cell.If allow filtrate to remain on appropriate location, so As time goes on, first filtrate will hinder and block fluid flow may pass through filter assemblies subsequently.Therefore, general custom is further for filter assemblies arranges cleaning head.This cleaning head longitudinally moves up and down by filter cell to scrape off the filtrate sticked on element.Usually, the filtrate flows removed is allowed to pass through the bottom of filter cell and flowed out by the opening in housing bottom.
U.S. Patent No. 5,198,111 disclose a kind of filter assemblies, and wherein cleaning head is installed to and extends through on the thread spindle of housing and filter cell along Y.The motor be installed on housing makes axle rotate to cause cleaning head to carry out longitudinal transplanting.U.S. Patent No. 5,527,462 disclose a kind of filter assemblies, and wherein cleaning head is installed to and extends down into the end of the piston rod in filter cell from case top.The opposed end of piston rod is arranged in the cylinder be attached in case top.Fluid such as compressed air is applied on cylinder to cause piston rod and cleaning head to extend/be retracted through filter cell.
With a shortcoming that screw type cleaning head actuator is associated is set for filter assemblies is that actuator has and forms with process flow the parts contacted.Must take steps to guarantee to drive the upline components of movable part not to be exposed to process flow.Such as, be necessary to guarantee to there is liquid-tight seal in around openings, helical axis is entered in housing by described opening.The around openings entering housing place at the piston of above-mentioned linear actuators must arrange similar seal.Should be appreciated that, fluid enters in housing usually under a significant amount of pressure, for example 150 psi.In order to successfully implement filtering technique, repeated actuation cleaning head may be necessary.Therefore, the seal supposing around actuator is subject to a large amount of pressure effect and actuator itself is subject to repeated actuation, and so the seal produces noticeable wear.These wearing and tearing need cost to make great efforts to confirm that seal keeps its globality in a large number, and change the seal when that integrity shows signs of failing.
Summary of the invention
The present invention relates to a kind of novel and useful filter assemblies for filtering industrial liquid-state process flow.Described filter assemblies of the present invention comprises the cleaning head with sealed actuator.Specifically, described actuator comprises the actuator tube be arranged in described assembly housing.The piston formed by magnet is arranged in described actuator tube.Described cleaning head is arranged in described actuator tube.The magnet be associated with described cleaning head makes described head be coupled on described piston, even if when described actuator tube makes described two parts separate.
The described cleaning head of described filter assemblies of the present invention upper and lower dislocation in described filter housings is made by optionally gas-pressurized or liquid being supplied to the opposed end of described actuator tube.In patterns more of the present invention, adopt forced air.Described air causes described piston to move longitudinally through described actuator tube.Because described cleaning head is magnetically coupled on described piston, therefore vertically move described in described piston and cause described cleaning head to carry out similar dislocation.
Described filter assemblies of the present invention is configured so that only have described cleaning head and attached complementary magnet carrier thereof to be the movable parts being exposed to described process flow.Described actuator tube is to the described parts forcing described cleaning head movement, and described piston seals.Therefore, the present invention does not need to arrange certain liquid-tight seal piece between the shell nozzle that extends through at the movable part extended in described filter housings and described component.The elimination of the seal and keep its needs to make and operate the totle drilling cost that described filter assemblies of the present invention is associated and minimize.
Accompanying drawing explanation
The present invention is noted the characteristic had in claim.Above-mentioned and further feature and advantage of the present invention also can be understood by reference to the accompanying drawings better by reference to following description, in the drawing:
Fig. 1 is the perspective view of filter assemblies of the present invention;
Fig. 2 is the sectional view of the basic element of character in filter assemblies of the present invention;
Fig. 3 is the sectional view of bottom cone;
Fig. 4 is the plane of actuator tube of the present invention and carrier sub-component;
Fig. 5 is the actuator tube and the sectional view of carrier sub-component that intercept along Fig. 4 center line 5-5;
Fig. 6 is the perspective view of actuator tube bottom cap;
Fig. 7 is the perspective view of piston;
Fig. 8 is the sectional view of piston, and wherein piston is illustrated and is arranged on air duct and is enclosed in actuator tube;
Fig. 9 illustrates how arrange the schematic diagram with piston and carrier assembly magnet in aggregates according to magnet polarity, spacing body between not shown magnet and the pipe-line system of carrier assembly, in addition, illustrate only the magnet on piston and carrier assembly side in figure, the layout on the second side is understood to form mirror-reflection with shown layout;
Figure 10 is the perspective view of carrier;
Figure 11 is the decomposition view of carrier;
Figure 12 is the sectional view of carrier, and wherein carrier is illustrated and is arranged in actuator tube;
Figure 13 is the top plan view of cleaning head;
Figure 14 is the sectional view of the cleaning head along Figure 13 center line 14-14 intercepting;
Figure 15 is the perspective view of cleaning head;
Figure 16 is the exploded partial view of cleaning head;
Figure 17 is the perspective view of cleaning blade;
Figure 18 is the sectional view of the cleaning blade along Figure 17 center line 18-18 intercepting; With
Figure 19 is the longitudinal sectional view of cleaning blade.
Detailed description of the invention
Fig. 1 and Fig. 2 shows the basic function parts of filter assemblies 20 of the present invention.Filter assemblies 20 comprises cylindrical housing 22 substantially.A pair relative leg 24 keeps housing 22 plane above Ground.Housing is connected to leg 24 by the protuberance 25 extended out from the opposite side portion of housing 22.Other parts of a pair foot 26 stable firmly housing 22 and the filter assemblies 20 in aggregates with housing, a foot 26 is attached on the end of each leg 24.
The top of housing 22 is openings.The cap 28 be hingedly attached on housing 22 optionally covers open top.Cap 28 remains on the openend of housing 22 by group of locking fixture 30 releasedly.Each fixture 30 has the U bolt 32 be bonded on the antelabium 36 that extends with the openend around housing 22 separate tab 34 in aggregates.Cap 28 remains on housing 22 by the joint of U bolt 32 on protuberance 34.The one source of fixture 30 is the Model 374 manufactured by the De-Sta-Co industry of Birmingham, Michigan.
The O shape ring 37 be arranged in the groove in the upper exposed surface of antelabium 36 provides liquid-tight seal (groove does not mark) between housing 22 and the interface of cap 28.Aperture 38 extends through the central axis of cap 28.Hole 38 is used as air vent.
The bottom of housing 22 is also opening.Bottom cone 40 is soldered or otherwise be forever fastened on the bottom of housing 22.See Fig. 2 and Fig. 3, notice that bottom cone 40 is formed the antelabium 41 had in the bottom being arranged on housing 22.Bottom cone 40 is further formed the tubular spout accessory 39 with the laterally extending substrate away from cone or bottom.
Bottom cone 40 is shaped to make conical section below immediately antelabium 41 and relative with cone sidepiece further, and namely conical section 42, has constant diameter, and accessory 39 is from the inner circumferential downward-extension of described cone sidepiece from antelabium 41.The part of cone 40 immediately below antelabium 41 and above accessory 39, i.e. conical section 43, from antelabium 41 inwardly and be bent downwardly.The end of bottom cone 40, namely cone end 44 is semi-spherical shape.Cone end 44 is parts of bottom cone 40, and outlet accessory 39 extends out from described part.
Tear-drop shaped protuberance 45 upwards extends from the inwall of cone end 44.Protuberance 45 is placed to make the wide diameter part of protuberance centered by the longitudinal axis of housing 22 and bottom cone 40.The narrow diameter sharp end of protuberance 45 point to outlet accessory 39 longitudinal axis and with its in line.
Filter cell 46 is arranged in the enclosure space limited by housing 22, cap 28 and bottom cone 40.Filter cell comprises the substrate ring 48 with L shape section profile, and filter member 50 extends out from described substrate ring.Although do not specifically illustrate, a kind of concrete filter member 50 comprises the metal rib multiple extending longitudinally being spaced small distance.Flank circumference around basal component extends.The metal annular ribs separated extends at the external surface peripheral of flank extending longitudinally.Gap between the flank of filter member 50 is the hole that process fluid flows through.
The shape apical ring 51 similar to base ring 48 extends around the top of filter member 50.The U-shaped shank 52 specifically illustrating one in figure upwards extends from apical ring 51.Shank 52 is conducive to filter cell 46 and installs in the housing 22 and from wherein removing.
When filter cell 46 is arranged in housing 22, the basal surface of substrate ring 48 leans against in the adjacent lip 41 of bottom cone 40.Compressor assembly is positioned on filter cell apical ring 51.Compressor assembly comprises snap ring 53, and multiple leg 54 (showing a leg 54) upwards extended is attached on described snap ring.When closing cap 28, the inner surface of cap leans against in the adjacent end of leg 54.Therefore cap 28 forces leg 54 and therefore forces snap ring 53 to lean against on filter cell apical ring 51.The joint maintenance filter cell 46 of these parts is in the appropriate position in housing 22.
Filter element base ring 48 is formed the outer beveled surface 55 with periphery bottom ring.Snap ring 53 is formed has similar beveled surface 56.First and second O shape rings 57 are arranged in the space of contiguous ring surface 55 and 56 of cutting sth. askew.Therefore, an O shape ring 57 provides liquid-tight seal between filter element base ring 48 and the adjacent inner wall of housing 22.Second O shape ring 57 provides liquid-tight seal between the snap ring 53 and housing 22 at filter cell 46 top place.
Inlet fitting 58 to be connected on housing 22 and to lead in the housing above snap ring 53.Outlet accessory 60 to be connected on housing 22 and to extend out from the opening be positioned at above filter element base ring 48 present position.When filter assemblies 20 is in operation, process flow is introduced in housing 22 and filter cell 46 intracardiac, as shown in arrow 59 by inlet fitting 58.Filtrate is caught by filter component 50.The process flow of filtering leaves filter assemblies 20 by outlet accessory 60, as shown in arrow 61.
Filter cell 46 inside catches the cleaning head assembly 62 of filtrate away from filter member 50 for removing.Cleaning head assembly 62 comprises discoidal cleaning head 64 substantially, and described cleaning head moves up and down by filter cell 46.Multiple cleaning blade 66 is attached on cleaning head at the peripheral of head.The adjacent inner surface that cleaning blade 66 adjoins filter member 50 is scraped from filter member will catch filtrate.Cleaning head 64 is slidably mounted within and extends through in the actuator tube 68 of housing 22 and filter cell 46 along Y.The piston 70 of pneumatic actuation is arranged on actuator tube 68 inside.Cleaning head 64 is magnetically coupled on piston 70.Therefore, the longitudinal transplanting of piston 70 in actuator tube 68 causes cleaning head 64 similarly to move longitudinally through housing and leans against on filter member 50.
By the understanding that this is basic, will be described cleaning head assembly of the present invention by initial reference Fig. 2, Fig. 4 and Fig. 5 now.Actuator tube 68 by will not react with the content of process flow and nonmagnetic have high magnetic permeability and low be preferably that the metal of the magnetic susceptibility of zero is made.So a kind of material that can form actuator tube 68 is 316 stainless steels.
Actuator tube 68 upwards extends from the columniform bottom 71 that is generally of solid, and described bottom is fixed and is fastened in bottom cone 40.With reference now to the bottom 71 described in Fig. 5 with Fig. 6, formed by the material identical with the material forming actuator tube 68.Bottom 71 is shaped to the bar portion 72 with diameter relative narrowness.Wide diameter head 74 is in aggregates with bar portion with the coaxial extension in bar portion 72.Two holes 76 and 77 extend longitudinally through bottom 71.First hole, the hole 76 namely in Fig. 6, extends to the opening (opening in hole is unmarked) centered by the longitudinal axis of bottom 71 on the top of head 74.Second hole, hole 77 extends to the opening (opening in hole is unmarked) in the head top of displaced central axis line.
Bottom cap stem section 72 is soldered or otherwise be fastened in the hole 75 formed in bottom cone boss 45.More specifically, bottom 71 is mounted on protuberance 45 to make bottom and therefore to make actuator tube 68 extend through bottom cone 40 and housing 22 along Y.O shape ring 79 in groove 80 in bottom cap stem section 72 provides liquid-tight seal between bottom and the adjacent inner wall of protuberance 45.The end of bottom cap stem section 72 extends beyond the shorter distance of the outer surface of bottom cone 40.
Actuator tube 68 is soldered or otherwise be fastened in bottom cap head 74.In order to be conducive to coordinating of actuator tube 68 and bottom, bottom 71 is formed the recess 86 having the little diameter around the periphery of head 74 and reduce.The end of actuator tube 68 is arranged in recess 86.
Return Fig. 5, can see that air duct 90 extends through actuator tube 68 along Y.One end of air duct 90 is installed in bottom cap head opening, and hole 76 extends to described opening.Air duct 90 is formed by the material identical with the material forming actuator tube 68.
End cap 92 covers the openend of actuator tube 68 and air duct 90.The end cap 92 usually with truncated cone is formed by the material identical with the material forming actuator tube 68.The periphery of end cap 92 is formed has recess (not marking), and the approach end of actuator tube 68 is placed in described recess.End cap 92 is also formed to have and upwards extends and the closed-end inlet bore 96 extended along the longitudinal axis covered from the substrate of lid.When assembling filter assemblies 20 of the present invention, air duct 90 leads in end cap inlet bore 96.
End cap 92 is further formed to have at least one outlet opening 98 (showing two) extended out from the substrate of ingate 96.Outlet opening 98 diagonally extends away from ingate 96.Therefore outlet opening 98 leads in a part for substrate for end cap 92, and described part is facing to the annular space limited by the inwall of actuator tube 68 and the outer wall of air duct 90.Therefore, hole 96 and 98 provides the fluid flowing path entering actuator tube 68 top from air duct 90.
Piston 70 is as shown in Figure 7 and Figure 8 formed to have two the opposed cylindrical end caps 102 be made of plastics.The concrete plastics of one that can be made into end cap 102 are by Tielt, the trade mark of the Quadrant Engieering PlasticProducts sale of Belgiumand Reading, Pennsylvania is called PETG (Polythyleneterphtalate) plastics with kollag of ERTALYTE TX.Be clipped in five Ring-shaped spacers 106 being four toroidal magnets 104 and being formed as pottery by nonmagnetic substance between end cap 102.More specifically, spacing body 106 is between often pair of magnet 104.Spacing body 106 is also between each end cap 102 and the magnet 104 of contiguous end cap.
As shown in Figure 9, magnet 104 is arranged such that the mask of adjacent magnets has identical polar.
End cap 102, magnet 104 and spacing body 106 keep together by the tube-shaped tie rod 108 formed by brass.Pull bar 108 extends through the central opening (central opening of magnet and spacing body does not mark) of magnet 104 and spacing body 106.One end of pull bar 108 and being threadedly engaged of being formed in the hole extending through an end cap 102.Second end of pull bar 108 and being threadedly engaged of being formed in the hole extending through second end cap 102.The internal diameter of pull bar 108 is about 0.010 inch, is greater than the diameter of enclosed air tube 90.
End cap 102 is made into certain size to fit snugly in the annular space between actuator tube 68 and air duct 90.Therefore end cap 102 is used as the bearing element of piston 70.Lippacking 110 is arranged in the groove 112 that the periphery along end cap 102 is formed.A seal 110 is coupled on each end cap 102.Therefore lippacking 110 is used as the containment member between piston 70 and the adjacent inner wall of actuator tube 68.O shape ring 114 is arranged in the reaming 116 of the openend around each hole extending through each end cap 102.O shape ring 114 is used as the seal between piston 70 and air duct 90.
Magnet 104 and spacing body 106 are made into certain size to have the diameter of the internal diameter be slightly less than around actuator tube 68.In a kind of pattern of the present invention, these parts are made into certain size to make the width of actuator tube 68 and the annular gap between magnet 104 and spacing body 106 for about 0.015 inch.This separation prevents magnet and spacing body to fray the inside of actuator tube 68.
Carrier assembly 120 now in conjunction with the shape of oversleeve substantially described in Figure 10, Figure 11 and Figure 12 makes cleaning head 64 be magnetically coupled on piston 70.Carrier assembly 120 to be slidably disposed in actuator tube 68 and to have the elongated outer tube 122 formed by the material identical with the material forming actuator tube 68.
What be arranged on the opposed end inside of outer tube 122 is that the oversleeve oblique crank Z formed as Ertalyte TX plastics by low-friction plastic holds 124.Each bearing 124 has the smooth surfaced outer wall 126 of the adjacent inner surface of adjacent outer tube 122.The inner of each bearing 124 is formed to have multiple teeth portion 128 arcuately spaced apart inwardly, and described teeth portion is arranged to circumference pattern.The inner surface of teeth portion 128 be actual physics adjoin the surface of the carrier assembly 120 of the outer surface of actuator tube 68.Other parts of bearing 124 and outer tube remain in outer tube by the clasp 130 be arranged in the groove 131 formed in the inner surface of outer tube 122.
Four magnets 132 be arranged in outer tube 122 outer tube 122 and in outer tube 122 between pipe 134.Interior pipe 134 extends between the relative inner face of bearing 124.The Ring shaped carrier retainers 136 formed by Ertalyte TX plastics is arranged in the annular space around the external opposite ends of pipe 134.Each carrier retainer 136 extends to the inner surface around outer tube 122 from the outer surface of adjacent inner tube end.O shape ring 138 and 139 is installed in the groove formed in the outer surface and inner surface of each carrier retainer 136 respectively.O shape ring 138 is formed and seals between relevant carrier retainer 136 and the adjacent outer surface of interior pipe 134.O shape ring 139 is formed and seals between relevant carrier retainer 136 and the adjacent inner surface of outer tube 122.
Magnet 132 is arranged in the enclosed annular space limited by outer tube 122 and interior pipe 134 and carrier retainer 136 respectively.The magnet 132 of Ring-shaped spacers 14 space between adjacent.A spacing body 140 is also between each carrier retainer 136 and adjacent flexible earner 132.
Can see from the diametric representation of Fig. 9, magnet 132 is arranged such that the face of identical polar is adjacent one another are.Magnet 104 and 132 is collectively arranged to make when carrier assembly 120 is assemblied on actuator tube 68 and piston 70, and the face of each magnet 132 has contrary polarity with the coplanar surface of corresponding co-planar magnet 104.
The parts of this filter assemblies 20 of the present invention carry out assembling to make pipe 134 in carrier assembly 120 have the diameter being about 0.125 inch, and described diameter is greater than the diameter of enclosed actuator tube 68.Therefore, the parts of the carrier assembly 120 of contiguous actuator pipeline 68 only have the teeth portion 128 of bearing 124.Therefore, when filter assemblies 20 in operation time, process flow can flow through gap between the bearing teeth 128 at one end place of carrier assembly 120, to be left by the gap between the bearing teeth 128 at the opposite end place of carrier assembly 120 by the annular gap between actuator tube 68 and interior pipe 134.This layout prevent the component of process flow as otherwise be trapped between actuator tube 68 and carrier assembly 120 by the solid that filter component 50 catches.If material allows to be trapped between actuator tube 68 and carrier assembly 120, so parts or all two parts can sustain damage.
As Figure 13,14, the cleaning head 64 shown in 15 and 16 the bests exists with discal form.Cleaning head 64 is shaped to have inner ring 142 and outer shroud 143.Inner ring 142 and outer shroud 143 link together by the thin plate 144 of four pieces of equi-angularly spaces respectively.Opening in head 64 between ring 142 and 143 and thin plate 144 allows process fluid flow to pass through head.
Cleaning head 64 is between antelabium 146 and the key portion 148 carrying out one group of equi-angularly space that circumference extends around carrier assembly outer tube 122 as shown in Figure 10 the best.Antelabium 146 and key portion 148 all form one with outer tube 122.The outer tube 122 of antelabium 146 in the middle part of adjacent conduit extends continuously.Key portion 148 be positioned at distance antelabium 146 above comparatively short distance, the i.e. thickness of cleaning head 64, position.The periphery at the center in each key portion 148 is formed to have little circular groove 150.The periphery of antelabium 146 is formed to have four grooves separated 152.Each groove 152 aligns with independently one of them key portion groove 150.
Return Figure 13 and Figure 15, can see that cleaning head inner ring 142 is formed and has one group of inside protuberance 154 separating certain angle.Cleaning head 64 and outer tube 122 are jointly made into certain size and can slide on pipeline 122 in the space in adjacent conduit key portion 148 to make cleaning head protuberance 154.Protuberance 154 is made certain size further to have inward flange 156, and described inward flange is made into certain size to be conducive to cleaning head 64 and is formed with the outer tube 122 of carrier assembly and be closely slidably matched.
Cleaning head 64 is releasably attached on carrier assembly 120 by making head be slidably fitted on outer tube 122.Movement outer tube lip 146 stopping cleaning head 64 is abutted against by making protuberance 154.Cleaning head 64 carries out rotating to make in the annular gap of protuberance 154 between antelabium 146 and the key portion 148 of outer tube 122 subsequently.More specifically, cleaning head carries out rotating until the opening 158 formed in inner ring 142 is aimed at the key portion groove 150 of carrier assembly 120 and antelabium groove 152 respectively.Lock pin 160 is arranged in opening 158.Lock pin 160 has and extends through opening 158 and the bar portion 162 laid respectively in key portion groove 150 and antelabium groove 152.Therefore cleaning head 64 remains on carrier assembly 120 by lock pin 160.
Lock pin 160 is further formed to have head 164, and described head has larger diameter and coaxial with bar portion 162.Therefore head 164 prevents lock pin 160 completely by opening 158.Ball pin portion 166 vertically extends from the substrate of head 164.Little wirerope (not shown) extends to cleaning head 164 lock pin 160 to be remained to cleaning head from a ball pin portion 166.The one-tenth ring opposed end of steel cable extends around the opening 169 and 170 formed in a ball pin portion 166 and cleaning head inner ring 142 respectively.
In shown pattern of the present invention, lock pin 160 is further formed to make slit 168 longitudinally extend partially past head 164 from head top.To cut sth. askew in the top of head 164 has profile.For head arranges the instrument that these features make lock pin 160 to be used as to remove from cleaning head 64 cleaning blade 66.
With reference now to each cleaning blade 66 described in Figure 15, Figure 17, Figure 18 and Figure 19, by can the single-piece of molded plastics be formed.A kind of suitable plastics are the trade marks sold by du Pont is the acetyl resin plastic of DELRIN.Cleaning blade 66 is formed to have arc substrate 172.Substrate 172 limits the bending outside 174 of blade 66, and described outside is set up and leans against on filter member 50.The sidepiece of the substrate 172 relative with the sidepiece of outside 174 is formed to have the groove 176 extending and reach base length.When cleaning blade 66 is installed on cleaning head 64, a part of head outer shroud 143 is arranged in groove 176.
Cleaning blade substrate 172 is further formed to have respectively the end face 178 and bottom surface 180 that the 174 relative shapes extended internally are identical substantially from the outside.Substrate 172 be formed to make end face 178 and bottom surface 180 respectively relative to the top edge of outside 174 and feather edge inwardly angled.The edge gone out by the interface definition of outside 174 and end face 178 and bottom surface 180 scrapes edge surface from filter member 50 by catching filtrate.
Cleaning blade substrate 172 is further formed to have opposing end surface 181 and 182.Each end face 181 extends to bottom surface 180 at one end place of substrate from end face 178.Substrate 172 is formed to make end face 181 become non-perpendicular obtuse angle with the top edge surface of substrate with the parallel plane on feather edge surface with 182.Face 181 and 182 is identical relative to the angle of base edge surfaces.
Each cleaning blade 66 is further formed to have two overlapping legs 183.The center of leg 183 facing to cleaning head 64 in substrate 172 in the opposite side portion of groove 176 extends internally.Each leg 183 has the profile of a wherein head webs 144 substantially.When each cleaning blade 66 is installed on head, relative blade legs 183 relevant wherein one piece of thin plate 144 above with below extend.
As Figure 16 the best illustrates one, cleaning blade 66 remains on cleaning head 64 by the pin portion 184 extending transversely through the opposite side portion of every block thin plate 144.Each leg 183 is formed has elongated slot 186.When cleaning blade 66 is mounted on head, leg 183 has and fully flexiblely outwards to bend when moving on associated pin 184 with convenient leg.When pin portion 184 and associated leg slot 186 are on time, leg 183 rebounds downwards in enclosed web 144 to cause pin portion to be arranged in slit.
Helical spring 190 makes each cleaning blade 66 outwards be biased relative to cleaning head 64.One end of each spring 190 is arranged in the parallel opposed slots 192 extended internally from the periphery of cleaning head outer shroud 143.More specifically, formed the right slit of each slit 192 with independently wherein a head webs 144 longitudinal axis and be positioned in the opposite side portion of the described longitudinal axis.
Therefore, between the leg 183 of cleaning blade 66 that each spring 190 is associated at spring.In order to be conducive to spring between leg, the opposed inner faces of leg 183 is formed has inside bent groove 193.The outer end of each spring 190 adjoins the spring pad 194 in aggregates with the substrate 172 of associated cleaning blade 66.Therefore spring pad 194 extends in the substrate of blade groove 176.
The opposite inner face of cleaning blade leg 183 is formed the taper 196 with contiguous leg end.Taper is conducive to leg and snaps in relevant cleaning head pin portion 184.Taper 196 also limits the space between cleaning head 64 and cleaning blade leg 183, in described space, lock pin 160 cut sth. askew and the head 164 with slit can be wedged between leg and cleaning head.This instrument allowing lock pin 160 to be used as leg 183 is bent is to be conducive to removing cleaning blade 66 from cleaning head 64.
Return Fig. 1, can see that two air lines 202 and 204 are connected to the exposed ends of bottom 71.Air line 202 is connected to cap bore 76 by reaming 203.Air line 204 is connected to cap bore 77 by reaming 205.The opposed end of air line 202 and 204 is connected to common manifold 206.What be also connected to manifold 206 is compressed air source 208 and the air vent 210 leading to air.Manifold piston (not shown) is connected with setting up between air-source 208 and air vent 210 at air line 202 and 204.Specifically, when the manifold piston is in a first setting, air line 202 is connected to air-source 208 and air line 204 is connected to air vent 210.When the manifold piston is in a second position, air line 202 is connected to air vent 210 and air line 204 is connected to air-source 208.
The position of manifold piston is subject to the control of solenoid 212.The actuating of solenoid 212 is subject to the control of filter control device 214.
Filter assemblies 20 of the present invention is in order to filter liquid state process streams.Process flow enters the center of filter assemblies 20 and filter cell 46 by inlet fitting 58.Should be appreciated that, process flow flows through the opening formed in cleaning head 64.The material that size is greater than in the process flow of the hole of filter member 50 is caught by filter member.Filtered process stream is crossed outlet accessory 60 and is discharged filter assemblies 20.
Along with passage of time, the deposit buildup of filtering material is on the inner surface of filter member 50.Cleaning head assembly 62 is subject to periodically activating to scrape this material from filter member 50.Cleaning head assembly 62 is activated to change the position of the piston of manifold 206 inside by providing energy for solenoid 212.
Such as, if cleaning head 64 is positioned at the position bottom adjacent actuator pipeline 68, so manifold piston is configured to make air line 202 be connected to air-source 208.Make air line 204 and make hole 77 lead to air by prolongation.When cleaning head 64 is in this state, the position of manifold piston is reset to make air line 202 and makes hole 76 be connected to air vent 210 by prolongation.Therefore hole 77 is also connected to air supply device by air line 204 by the replacement of manifold piston.
Therefore, the process of above-mentioned replacement manifold piston cause the pressurized air from air supply device 208 to flow through bottom that air line 204 and hole 77 enter the actuator tube 68 below piston 70.Now, the space in actuator tube 68 above piston 70 leads to air.Therefore, the power propelling piston 70 of pressurized air is upwards by actuator tube 68.In patterns more of the present invention, believe that the air being necessary to supply under the pressure being in 60psi to enter in actuator tube 68 thus to cause piston 70 that required dislocation occurs.Owing to making carrier assembly 120 and making cleaning head 64 be magnetically coupled on piston 70 by extension, therefore these parts engage in the approximate mode moved upward.The moving up of cleaning head 64 causes cleaning blade 66 to be scraped leaning against on filter member 50 to remove the filtrate be captured on component.
By the filtrate guiding purge stream periodically to be removed from filter assemblies 20 by assembly.In purging flow process, filtrate to be washed in bottom cone 40 and to be left by cone outlet accessory 39.The shape of bottom cone 40 guarantees that liquid purge flowing is throughout the whole inner space of bottom cone.Purge fluid carries out by this way flowing and substantially eliminates filtrate and will be captured and adhere to the possibility on bottom cone inner surface.
Once piston 70 and therefore cleaning head 64 arrive the top of actuator tube 68, piston is remained on appropriate position by the operation in the space so air for continuous be applied in actuator tube 68 below piston 70.Cleaning head 64 is reduced by the position of manifold piston of reversing.This effect makes the space in actuator tube 68 below piston 70 be communicated with air with air vent 210 by cap bore 77, air line 204.Meanwhile, pressurized air flows in the top of the actuator tube 68 above piston 70 from feeding mechanism 208, air line 202, cap bore 76, air duct 90 and ending cover hole 96 and 98.This pressurized air forces piston 70 and therefore force cleaning head 64 and cleaning blade 66 to move down.
The moving down of cleaning head 64 also causes cleaning blade 66 to move leaning against on filter member 50 to scrape the filtrate of catching from component.
One of them main actuated moving components of filter assemblies 20 of the present invention, i.e. piston 70, is comprised in sealed actuator tube 68.Second actuated components, i.e. cleaning head 64, be magnetically coupled on piston 70.Therefore, filter assemblies of the present invention does not need to arrange seal between cleaning head 64 and the parts activating cleaning head to prevent these parts below to produce with process flow and contacts.Because filter assemblies does not need such seal, therefore eliminate equally and keep sealing relevant maintenance task.
Cleaning blade 66 is configured so that vane end faces 181 becomes non-perpendicular obtuse angle with 182 with the longitudinal axis of blade.As shown in figure 15, this structure is guaranteed gap around cleaning head 64 periphery that do not covered by the edge surface of one of them cleaning blade and is guaranteed that the edge surface by adjacent blades covers by filter member 50 by extending.Therefore, when blade 66 weares and teares, filtrate is scraped from whole component on each peripheral part being pressed against filter member 50 by still having blade edge surface.
Spring 190 guarantees that the edge surface of blade continues to be pressed against on filter member 50 when the substrate 172 of the cleaning blade 66 be associated with spring is worn and torn.
The spring pad 194 of cleaning blade 66 performs two kinds of functions.Spring pad 194 is used as the surface of related springs 190 breastings.Spring pad 194 is also used as the cushion base part of partial interior and the substrate of groove 176 that limit outside 174 kept together.This function is desired, this is because along with passage of time, blade base 172 situation about being pressed against on filter member 50 causes this outer peripheral portion of substrate to produce abrasion.Finally, the material forming this part of cleaning blade 66 can worn out arrival groove 176.When this happens, the remainder of substrate and the part that limits the bottom margin 178 of substrate and the inside of top 180 respectively keep together by spring pad 194.Therefore, spring pad 194 prevents the separation of the part of cleaning blade from making it be in filter assemblies 20 simultaneously.
Should be appreciated that, description is above limited to the concrete pattern of one of the present invention.Other pattern of the present invention can have the feature being different from and describing pattern.
Such as, it filter housings 22 may be desired for being installed to by magnetic field sensor 218 and 220.A sensor, the sensor 218 namely shown in Fig. 2, is installed on filter housings 22 to align with the minimum lengthwise position of piston 70 and carrier assembly 120.Sensor 220 is installed on filter housings 22 to align with the highest lengthwise position of piston 70 and carrier assembly 120.Sensor 218 and 220 can be that hall effect sensor or magnetic actuation switch are as reed switch.Each sensor 218 and 220 is enclosed in the protective cover 222 of itself, and described protective cover and surrounding environment magnetic screen are come.
Therefore, sensor 218 and 220 is sensitive to the magnetic field produced by piston magnet 104 and carrier assembly magnet 132.Therefore, sensor 218 and 220 produces respectively and represents when cleaning head 64 is in the signal of the minimum and extreme higher position in filter member respectively.Whether these signals can be in suitably operation in order to monitor filter assemblies of the present invention.The signal produced by sensor 218 and 220 also can be applicable to filter control device 214.Filter control device 214, based on the cleaning head positional information provided by sensor signal, optionally controls the energy supply process of solenoid 212 subsequently to regulate the position of manifold piston.
Should further be recognized that and other option means can be used to move up and down in actuator tube 68 with driven plunger 70.Such as, it may be desired for one group of electric actuation valve being connected to air line 202 and 204.By optionally arranging valve, every bar air line can be connected to compressed air source, and leads to the air vent of air or hermetically closing.Therefore, place piston 70 in use pressurized air, and when making it be in raised position by extension, air line 204 can be closed.This stays making the pressurized air of discharge in air line 204, cap bore 77 and actuator tube 68, and maintenance piston 70 is in increasing state by this.This will eliminate pressurized air without interruption to perform the needs of this function.
Also understandable further, be not subject in fluid-operated all patterns of the present invention, the stream pipe towards actuator tube top is all positioned at actuator tube.In patterns more of the present invention, this pipeline, the air duct 90 namely in described pattern of the present invention, can be positioned at actuator tube 68 outside.This pipeline even can not be attached on the outside of actuator tube 68; Pipeline can be the free-standing pipeline in filter housings 22.
In addition, not in all patterns of the present invention, be all necessary to use pneumatic fluid with driven plunger 70.In patterns more of the present invention, hydraulic fluid can be adopted to perform this function.Should further be recognized that and may unnecessaryly in all patterns of the present invention, all adopt fluid to move up and down by actuator tube 68 with driven plunger 70.In other optional pattern of the present invention, piston, or at least magnet 104, can be subject to the driving of driving screw and move up and down in actuator tube 68, and described driving screw rotates when in position of rest in actuator tube 68.For driving the mechanism of this driving screw can be similar to U.S. Patent No. 5,198, the mechanism described in 111.In other pattern of the present invention, magnet 104 can be in the head place of the piston rod be arranged in actuator tube 68.The head be associated with piston rod to be comprised in the bucket cylinder of housing 22 outside and to be subject to air pressure or hydraulic-driven.Concrete hydraulic-driven assembly can be similar to U.S. Patent No. 5,527, the assembly described in 462.
Will be further understood that the material constructing described pattern of the present invention is understood to be exemplary instead of restrictive.
Of the present invention another is characterised in that, in patterns more of the present invention, multiple filter assemblies housing 22 links together by protuberance 25.In these patterns of the present invention, housing 22 supports mutually.Therefore, the array of filter assemblies 20 of the present invention can be assembled together, and need not be the supporting leg that each assembly arranges himself.
It should further be appreciated that, feature of the present invention can be implemented independently of one another when desired.Not all magnetically coupled cleaning head assemblies of the present invention are all necessary to adopt cleaning head that is illustrated and that describe and cleaning blade sub-component.Similarly, described cleaning head and cleaning blade sub-component may be utilized and have other optional actuator.
The modification of described cleaning blade is also possible.Such as, in patterns more of the present invention, may unnecessaryly provide opposed legs to be conducive to cleaning blade to be installed on associated cleaning head.In these patterns of the present invention, the first component that cleaning blade side surface is formed or void space can engage with the complementary second void space on cleaning head or component, or engage in described space or component.In other optional pattern of the present invention, each cleaning blade can have two or more leg on every side, and described leg has and is designed to be conducive to component that cleaning blade engages with complementary cleaning head or void space.
Therefore, an object of claims is to cover all this modification in true spirit of the present invention and scope and remodeling.
Claims (13)
1., for removing a cleaning head assembly for the filter assemblies of material from process flow, described cleaning head assembly comprises:
Cleaning head, it is formed as can the disk of movement together with filter assemblies actuator;
The cleaning blade of multiple circumference distribution, there is in each described cleaning blade the substrate of radially outward protruding that cross section is U-shaped substantially and limit radially inner open groove, when described cleaning blade is installed on described disk, a part for described disk is arranged in described groove; With
Multiple spring, each spring makes in described blade one to be outwards biased relative to described disk, and wherein the inner of each spring is arranged in the periphery of described disk, and the outer end of each spring adjoins the spring pad in aggregates with the substrate of described cleaning blade,
Wherein, each described blade also has substrate and from the described substrate radially-inwardly leg that extends regularly of side, described leg axially spaced-apart, the described leg of described blade and more spaced apart spaces of described leg circumference of other blade, this space is aimed at the opening in described disk, thus allow process fluid to flow axially across described cleaning head
Wherein, described spring extends radially outwardly from parallel opposed slots between described axially spaced described leg, and described parallel opposed slots extends internally from the periphery of described disk.
2. cleaning head assembly according to claim 1, wherein said spring is helical spring.
3. cleaning head assembly according to claim 1, wherein said substrate has substantial parallel and circumferentially close opposing end surface, and described end face is respectively relative to top surface and the basal surface angular slope in obtuse angle of described substrate.
4. cleaning head assembly according to claim 1, wherein said spring is radial elongated compression spring.
5. cleaning head assembly according to claim 1, be included in the axial pin portion on described disk and the radial slit on described leg, pin portion described in described slot acceptance, limits corresponding substrate thus and carries out circumference movement relative to described disk and allow it to move radially.
6. cleaning head assembly according to claim 1, wherein said substrate is configured as to be had: arc-shaped outer surface; Relative top surface and lower surface, they extend internally from described arc-shaped outer surface, and described outer surface and top surface define top; And opposed end surfaces, each described end surface extends from described top surface to described lower surface and becomes obtuse angle with described top.
7., for removing a cleaning head assembly for the filter assemblies of material from process flow, described cleaning head assembly comprises:
Cleaning head, it is formed as the disk with opening;
The cleaning blade of multiple circumference distribution, each described cleaning blade has the radially outward convex substrate in roughly U-shaped cross section, the radially inner open groove of described convex base bound, when described cleaning blade is installed on described disk, a part for described disk is arranged in described groove, each described blade also has two overlapping legs, described leg is radial along securing elongated medially and axially spaced-apart from described substrate, the described leg of described blade and more spaced apart spaces of described leg circumference of other described blade, this space is aimed at the described opening in described disk, thus allow process fluid through described cleaning head flowing, with multiple spring, each spring makes in described blade one to be radially outward biased relative to described disk, wherein the inner of each spring is arranged in the periphery of described disk, and the outer end of each spring adjoins the spring pad in aggregates with the substrate of described cleaning blade
Wherein, described spring extends radially outwardly from parallel opposed slots between described axially spaced described leg, and described parallel opposed slots extends internally from the periphery of described disk.
8. cleaning head assembly according to claim 7, it is characterized in that, described cleaning blade is set to the interior surface of adjacent filter cell, the substrate of each described cleaning blade is against the interior surface of filter cell, the opposed end surfaces that described substrate has relative parallel top surface and lower surface and extends between described top surface and lower surface, described end surface becomes obtuse angle with described top surface with lower surface.
9. cleaning head assembly according to claim 7, is characterized in that, described substrate has the relative top surface and lower surface that extend internally from outer surface, and described outer surface and top surface define top; Relative end surface, each end surface extends to described lower surface from described top surface and becomes obtuse angle with described top.
10. cleaning head assembly according to claim 7, is characterized in that, each in described spring is radial elongated compression spring.
11. cleaning head assemblies according to claim 7, wherein axial pin portion on described disk and radial slit on described leg, pin portion described in described slot acceptance, limiting corresponding substrate thus, to carry out circumference relative to described disk mobile and allow it to move radially, and described leg is flexible to be connected in described pin portion thus to make described blade be bonded on described disk.
12. cleaning head assemblies according to claim 7, wherein said spring is helical spring.
13. cleaning head assemblies according to claim 7, wherein said disk is configured as has inner ring and outer shroud.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/654013 | 2003-09-03 | ||
| US10/654,013 | 2003-09-03 | ||
| US10/654,013 US7093721B2 (en) | 2003-09-03 | 2003-09-03 | Filter assembly with sealed, magnetically coupled cleaning head actuator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800327056A Division CN100421761C (en) | 2003-09-03 | 2004-09-01 | Filter assembly with sealed, magnetically coupled cleaning head actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102764532A CN102764532A (en) | 2012-11-07 |
| CN102764532B true CN102764532B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800327056A Active CN100421761C (en) | 2003-09-03 | 2004-09-01 | Filter assembly with sealed, magnetically coupled cleaning head actuator |
| CN2008102132029A Active CN101357277B (en) | 2003-09-03 | 2004-09-01 | Cleaning blade and cleaning head |
| CN201210105319.1A Active CN102764532B (en) | 2003-09-03 | 2004-09-01 | Cleaning head |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800327056A Active CN100421761C (en) | 2003-09-03 | 2004-09-01 | Filter assembly with sealed, magnetically coupled cleaning head actuator |
| CN2008102132029A Active CN101357277B (en) | 2003-09-03 | 2004-09-01 | Cleaning blade and cleaning head |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7093721B2 (en) |
| EP (3) | EP2316555B1 (en) |
| CN (3) | CN100421761C (en) |
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| CA (3) | CA2759240C (en) |
| DE (1) | DE602004029692D1 (en) |
| WO (1) | WO2005023394A2 (en) |
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- 2004-09-01 WO PCT/US2004/028430 patent/WO2005023394A2/en active Application Filing
- 2004-09-01 EP EP10011498.2A patent/EP2316555B1/en active Active
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- 2004-09-01 EP EP04782846A patent/EP1663441B1/en active Active
- 2004-09-01 CA CA2759240A patent/CA2759240C/en active Active
- 2004-09-01 AT AT04782846T patent/ATE485090T1/en not_active IP Right Cessation
- 2004-09-01 CA CA2536575A patent/CA2536575C/en active Active
- 2004-09-01 CN CN2008102132029A patent/CN101357277B/en active Active
- 2004-09-01 DE DE602004029692T patent/DE602004029692D1/en active Active
- 2004-09-01 CA CA2759236A patent/CA2759236C/en active Active
- 2004-09-01 CN CN201210105319.1A patent/CN102764532B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762615A (en) * | 1986-08-15 | 1988-08-09 | Mordeki Drori | Semi-automatic fluid filter |
| EP0473975A3 (en) * | 1990-08-16 | 1992-04-22 | Arai Corporation | Scraper filter system |
| US5080788A (en) * | 1990-08-24 | 1992-01-14 | Chen T H | Water filter with fluid actuated cleaner |
| CN1282268A (en) * | 1997-12-18 | 2001-01-31 | 阿-卡尔塑料制品公司 | Reverse flow spin-cleaning liquid filters |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2536575A1 (en) | 2005-03-17 |
| DE602004029692D1 (en) | 2010-12-02 |
| EP2308577B1 (en) | 2012-11-07 |
| EP2316555B1 (en) | 2014-01-01 |
| CA2759236A1 (en) | 2005-03-17 |
| ATE485090T1 (en) | 2010-11-15 |
| WO2005023394A2 (en) | 2005-03-17 |
| US20050045537A1 (en) | 2005-03-03 |
| CA2759240A1 (en) | 2005-03-17 |
| EP2308577A1 (en) | 2011-04-13 |
| CN1874833A (en) | 2006-12-06 |
| CA2536575C (en) | 2012-11-20 |
| EP1663441A2 (en) | 2006-06-07 |
| EP2316555A1 (en) | 2011-05-04 |
| CN101357277A (en) | 2009-02-04 |
| BRPI0414080A (en) | 2006-10-24 |
| EP1663441B1 (en) | 2010-10-20 |
| CN101357277B (en) | 2012-06-13 |
| WO2005023394A3 (en) | 2005-05-12 |
| BRPI0414080B1 (en) | 2016-04-12 |
| CN100421761C (en) | 2008-10-01 |
| US7093721B2 (en) | 2006-08-22 |
| CA2759240C (en) | 2014-01-28 |
| CA2759236C (en) | 2013-07-16 |
| CN102764532A (en) | 2012-11-07 |
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